謝謝夫子，看來對有症狀的保護率高（大於99%）這個重症保護率怎麽算呢？請看我算的對嗎？

The data shows that out of 3,387,340 vaccinated people who had had more than a week pass after receiving their second vaccine dose, only 4,711 were found to be positive for the virus and of those, only 907 developed symptoms, including fever or respiratory problems.

有症狀幾率=（4711+907）／3,387,340 =0.2%？==》對有症狀的保護率=99.8%

Of the 6,095 coronavirus patients hospitalized in serious or critical condition since the start of Israel’s vaccination campaign, only 175, or 2.87 percent, had received the second vaccination dose, the figures show.

重症率=175/3,387,340=0.005%？重症保護率=（6095-175）/6095=97%？

所有跟帖： 

• 要跟沒打疫苗的各種數據做橫向比較。比如一萬沒打疫苗的，有98人重症，而打了疫苗的隻有2人：2/（98+2）=2%，即98%保護率 -fuz- ♂ (0 bytes) () 03/09/2021 postreply 18:16:29